wp-admin/includes/class-ftp.php:311$timeoutoptional30 function SetTimeout($timeout=30) { $this->_timeout=$timeout; $this->SendMSG("Timeout ".$this->_timeout); if($this->_connected) if(!$this->_settimeout($this->_ftp_control_sock)) return FALSE; return TRUE; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-ftp.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.